This is what happens when you toss glow sticks into a waterfall

In "Neon Luminance," San Francisco-based photographers Sean Lenz and Kristoffer Abildgaard transform the scenic waterfalls of Northern California into psychedelic spectacles using a colorful range of high-powered, military-grade glow sticks.

After the glow sticks are dropped into the water, the current creates beautiful neon trails of light that are captured by a camera set with exposure times ranging from 30 seconds to 7 minutes. Throw in some ambient moonlight and strategically placed lasers, road flares and head lamps, and you've got the perfect recipe for some truly brilliant long-exposure photography.

To avoid polluting the water with plastic and toxic, chemiluminescent goo, the duo made sure to collect the unopened, buoyant sticks at the end of each exposure.